WO1997011021A1 - Grue et procede de changement de cable - Google Patents

Grue et procede de changement de cable Download PDF

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Publication number
WO1997011021A1
WO1997011021A1 PCT/JP1996/000092 JP9600092W WO9711021A1 WO 1997011021 A1 WO1997011021 A1 WO 1997011021A1 JP 9600092 W JP9600092 W JP 9600092W WO 9711021 A1 WO9711021 A1 WO 9711021A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
rope
hanging
block
sheave
Prior art date
Application number
PCT/JP1996/000092
Other languages
English (en)
Japanese (ja)
Inventor
Mituo Hirata
Yoshiaki Miyanaga
Original Assignee
Hitachi, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi, Ltd. filed Critical Hitachi, Ltd.
Publication of WO1997011021A1 publication Critical patent/WO1997011021A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C11/00—Trolleys or crabs, e.g. operating above runways
    • B66C11/12—Trolleys or crabs, e.g. operating above runways having hoisting gear adapted to special load-engaging elements and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/12—Grabs actuated by two or more ropes
    • B66C3/125—Devices for control

Definitions

  • the present invention relates to a crane, particularly to a multipurpose crane that selectively uses two types of hanging members.
  • An object of the present invention is to provide a multi-purpose crane in which all operations of the two types of suspenders can be performed by a rope.
  • the purpose is to facilitate the work of exchanging the hanger.
  • a second object of the present invention is to make it easier to replace a hanging tool.
  • a third object of the present invention is to make lobe replacement easier.
  • the first object of the present invention is to
  • Two first sieve blocks detachably provided at each longitudinal end of a first hanging device for hanging a long object
  • a second sieve block removably provided on a second hanging member shorter than the first hanging member
  • a second drum having second ropes each suspending the second sheave block
  • An electric motor for driving the first drum and the second drum An electric motor for driving the first drum and the second drum
  • the distance between the two first sieve blocks is set to be larger than the length of the second hanging member
  • a suspending device is attached to one of the first and second sieve blocks, and a suspending device is installed to the other sieve block.
  • the sieve block without the hanger is located above the sieve block with the hanger attached
  • the two sieve blocks are separated from each other when the two sieve blocks without the first hanging member are located above.
  • remove the sieve block from the lifting device in use raise the lifting device, lower the suspension device, and attach it to the lifting device.
  • the two sieve blocks of the long object hanging device are divided in the longitudinal direction and do not interfere with the second hanging device, the two hanging devices are suspended from the center of the trolley. Is what you can do.
  • the sieve block of the suspended hanger is located higher than the hanger suspended on the main winch rope, and does not hinder the cargo handling work.
  • a second object of the present invention is to
  • a first sieve block removably provided on the first hanger
  • a second sieve block detachably provided on the second hanging member
  • a first drum having two first mouthpieces respectively suspending the two first sieve blocks
  • a second drum having second lobes each suspending the second sieve block
  • An electric motor for driving the first drum and the second drum An electric motor for driving the first drum and the second drum
  • a hanging device is attached to one of the first sheave block and the second sieve block, and no hanging device is installed to the other.
  • the sieve block without the hanger is located above the sieve block with the hanger attached
  • the motor for driving the first drum and the motor for driving the second drum are common,
  • the electric motor, the first drum and the second drum are connected via a clutch. And connected
  • the clutch is selectively connected to the first drum and the second drum;
  • a third object of the present invention is to
  • Each drum is wound around one end of one rope that suspends the lifting device.
  • the drum wound around one end of the lobe is used for normal cargo handling, and the drum wound around the other end is used for replacement. This can be achieved by using a drum that holds rope.
  • FIG. 1 is a layout diagram of a rope of a multipurpose crane according to an embodiment of the present invention.
  • FIG. 2 is a side view of a multipurpose crane according to an embodiment of the present invention.
  • FIG. 3 is a side view of a main part on the right side of the machine room in FIG.
  • Fig. 4 is a plan view of the right half showing the arrangement of the mouthpieces of the grab bucket when the hanging tool used is a drab bucket.
  • Fig. 5 is a plan view of the right half showing the arrangement of the caps of the container hanger when the hanger used is a grab bucket.
  • Fig. 6 is a plan view of the right half showing the arrangement of the ropes of the container hanger when the hanger used is the container hanger.
  • Fig. 7 is a plan view of the right half showing the arrangement of the grab bucket loops when the hanging device used is a container hanging device.
  • FIG. 8 is a front view of a grab bucket according to one embodiment of the present invention.
  • FIG. 9 is a side view of FIG.
  • FIG. 10 is a front view of a container hanger of one embodiment of the present invention.
  • FIG. 11 is a longitudinal sectional view of a main part of a machine room according to one embodiment of the present invention.
  • FIG. 12 is a layout diagram of a rope for a multipurpose crane according to another embodiment of the present invention.
  • FIG. 13 is a side view of the multipurpose crane of FIG.
  • FIG. 14 is a side view of a main part on the right side of the machine room in FIG.
  • FIG. 15 is a plan view of the right half showing the lobe arrangement of the multipurpose crane of FIG.
  • Fig. 16 is a plan view of the machine room showing the connection state of each drum when the hanger used is a grab bucket.
  • Fig. 17 is a plan view of the machine room showing the connection state of each drum when the hanging device used is a container hanging device.
  • FIG. 18 is a side view of the fixed portion of the suspension hook of the suspended hanger in the multipurpose crane of FIG.
  • FIG. 19 is a front view of a fixing portion of the bucket rope of the multipurpose crane of FIG.
  • FIG. 20 is a left side view of FIG.
  • FIG. 21 is a side view of the drum of the spare lobe of FIG.
  • FIG. 22 is a left side view of FIG.
  • FIG. 23 is a side view of the brake device according to one embodiment of the present invention.
  • FIG. 24 is a side view of the brake device of FIG. 23 in a set state.
  • FIG. Figure 1 shows the arrangement of all the ropes of the multipurpose crane hanger.
  • the state shown in FIG. 1 is a state in which the grab bucket 100 is used, and the four ropes 61 and 62 used for the operation of the grab bucket 100 are indicated by solid lines.
  • Four ropes 65 and 66 used to raise and lower the suspended container hanging device 150 are shown by imaginary lines.
  • Two ropes 6 1 and 6 2 are wound around main inches 51 and 52 respectively.
  • the main winches 51 and 52 each have two sets of grooves around which the rope is wound, and the rope is wound in one step.
  • the main winches 51 and 52 have a long axial length. That is, the main winches 51 and 52 each have two drums.
  • auxiliary winches 55, 56 Two ropes 65, 66 are wound on auxiliary winches 55, 56, respectively.
  • the auxiliary winches 55, 56 each have two drums.
  • the auxiliary winches 55, 56 are for winding the mouthpieces of the suspended hanger, so that four lobes are wound on each other. For this reason, the length of the auxiliary winches 55, 56 in the axial direction is short. Since the auxiliary winches 55 and 56 are not used for cargo handling, they are of the type that can be stacked, so that they can be made small and inexpensive.
  • the electric motors 51a, 51b of the main winches 51, 52 and the electric motor 57 of the auxiliary winches 55, 56 have brakes.
  • the lobes 6 1, 6 2 of the main winches 51, 52 are four sheaves 71 at the end of the girder, four sheaves 72 of the trolley 80, and a pair of sheaves of the club bucket 100.
  • One sheave 105, 106, four sheaves 73 of the trolley 80, and three sheaves 74 at the other end of the gadder are sequentially wound.
  • One rope of the rope 6 1 and one lobe of the mouthpiece 6 2 are respectively connected, and the four lobes 6 1 and 6 2 are actually two.
  • Lobes 61 and 62 are hung on sheave 74, essentially as if they were fixed to the end of the girder.
  • the ropes 65, 66 of the auxiliary winches 55, 56 are four sheaves 75a, 75b at the end of the girder and four sheaves 76a, 76b of the trolley 80.
  • 4 sheave blocks of 150 h 150 4 sheaves of 151 a, 151 b b 155 a, 155 b
  • trolley 80 four sheaves 76 a, 7 6b, four sheaves 77 at the other end of the girder are hung sequentially.
  • One lobe of robe 65 and one rope of rope 66 are connected to each other, and four ropes 65 and 66 are actually two.
  • Lobes 65 and 66 are hung on sheaves 77, essentially as if they were fixed to the end of the girder.
  • the arrangement of the lobes 65,66 between the eight sheaves 76a, 76b of the trolley 80 and the four sheaves 1555a, 155b of the hanging device 150 is known. It is as follows.
  • the container lobes 65 and 66 are located outside the grab bucket ropes 61 and 62. Sheaves 1555a and 1555a suspend one end of the hanging device 150, and sheaves 1555b and 1555b suspend the other end.
  • the sieve block 15a and the sieve block 15 1 are divided.
  • the trolley 80 in FIG. 3 shows only the raised sieve blocks 15a and 15lb.
  • Fig. 1 is a schematic diagram showing the arrangement of the ropes, and the winches 51, 52, 55, The position of 56, the arrangement of the sieves 75a, 75b, the arrangement of the ropes between the winches 51, 52, 55, 56 and the sieves 75a, 75b Incorrect.
  • Figures 2 to 6 are correct in this regard.
  • Figure 2 shows the overall configuration of the multipurpose crane.
  • the girder 40 on which the trolley 80 runs is supported by four legs 41, 42.
  • the position 4 3 between the sea-side leg 4 1 and the mating-side leg 4 2 is the cargo handling position on the land side of the container.
  • a hopper 45 that receives the bulk from the grab bucket 100 is installed on the land side more than the land side leg 42.
  • the trolley 80 travels between position 43 and the ship.
  • the trolley 80 travels between the ship and the hopper 45.
  • a machine room 90 is provided above the girder 40 above the position 43.
  • Main winches 51 and 52 and auxiliary winches 55 and 56 are installed in the machine room.
  • the main winches 51 and 52 are connected to the trolley 80.
  • the main winch 51 near the sieve 71 is installed at a higher position than the main winch 51.
  • the auxiliary winches 55, 56 are located higher than the main winch 51 located at a higher position.
  • the auxiliary winches 55, 56 are located on the sheave 71 side of the main winch 51.
  • the ropes 61, 62, 65, 65 intersect between the sheaves 71, 75a, 75b and the winches 51, 52, 55, 56.
  • the high position is to prevent contact between the lobes between the winches 51, 52, 55, 56 and the sheaves 71, 75a, 75b. Say the position to do.
  • the installation position of the winches 51, 52, 55, 56 depends on the position where the rope is taken out of the winch, the positions of the sheaves 71, 75a, 75b, and the presence or absence of a sieve between them. Is determined by The distance between the auxiliary ⁇ inches 55, 56 should be small, and the rope connected to it should be as parallel as possible to the traveling direction of the trolley 80. If the lightweight auxiliary winches 55, 56 are installed above, the heavy main winches 51, 52 can be installed below. Therefore, it is safe against outside wind.
  • the main winches 51 and 52 have electric motors 51a and 51b, respectively, and can be operated independently.
  • the two main winches 51 and 52 are provided so as to be connectable by a clutch 53 and can be operated synchronously.
  • the auxiliary winches 55, 56 are connected by a shaft, and are driven by one electric motor 57.
  • the number of auxiliary winches 55, 56 is substantially one.
  • FIG. 4 shows the layout of the ropes 61 and 62 of the grab bucket 100 when the hanging device used is the grab bucket 100.
  • the rope hung on the two sheaves 71 inside the four sheaves is connected to the main winch 51 at a high place.
  • the mouth of the outer two sheaves 7 1 is connected to the lower main winch 52.
  • FIG. 5 shows the arrangement of container ropes 65 and 66 when the hanging device used is the grab bucket 100.
  • the sheaves 75a and 75b at the end of the girder 40 are arranged so as to be substantially parallel to the traveling direction of the trolley 80;
  • the rope 65 on the sheave 75a is connected to the auxiliary winch 55 on one end, and the rope 66 on the sheave 75b is connected to the auxiliary winch 56 on the other end. In either case, win
  • win The lobes between switches 51, 52, 55, 56 and sieves 41, 75a, 75b do not intersect in the horizontal direction.
  • FIG. 6 shows the arrangement of container ropes 65 and 66 when the hanging equipment used is a container hanging equipment.
  • FIG. 7 shows the arrangement of the ropes 61 and 62 for the grab bucket 100 when the hanging device used is the container hanging device 150.
  • the lobes between winches 51, 52, 55, 56 and sheaves 41, 75a, 75b do not intersect in the horizontal direction.
  • the main winches 51 and 52 are operated to support and open and close the grab bucket 100.
  • the traveling of the trolley 80 is performed by, for example, an electric motor installed on the trolley.
  • the auxiliary winches 55, 56 are not operated.
  • the hanging device used is the container hanging device 150 as shown in FIGS. 6 and 7, the main winches 51 and 52 are operated to raise and lower the hanging device 150 in the same manner as described above.
  • the auxiliary winches 55, 56 are not operated.
  • S 1 Operate the main winches 51 and 52 and lower the grab bucket 100 on the ground. As shown in FIGS. 8 and 9, the main winch 52 is operated to open the grab packet 100 before descending, thereby preventing the grab bucket 100 from falling over when placed on the ground.
  • S2 Pull out a plurality of connecting brackets 113 that connect the lower block 102 of the grab bucket 100 to the main body 103 of the grab bucket 100.
  • S3 Operate the main winch 52 to raise the sheave block 102, and combine the sheave blocks 101 and 102.
  • S4 The sheave blocks 101 and 102 are connected by a plurality of connecting plates 115 and a plurality of connecting brackets 116. Thus, the interval between the two blocks 101 and 102 can be kept constant.
  • FIG. 8 shows a state in which the connecting plate 115 is fixed to the sieve block 101, but the connecting plate 115 is not normally installed in the sieve block 101.
  • S7 Run the multipurpose crane or move the trolley 80 so that the trolley 80 is positioned above the main body 1553 of the container hanging device 150 placed on the ground.
  • the mounting table 210 of the sheave block 102 is placed on the main body 153.
  • the mounting table 210 is placed on the ground.
  • 154 is a cable basket installed on the hanging device 150.
  • the cable basket 154 houses the cable for the power supply of the hanger 150.
  • S8 Operate the main winches 51 and 52 to lower the sieve blocks 101 and 102, and place the sieve block 102 on the mounting table 210. It is shown in FIG. Further, the main winches 51 and 52 are operated, and the lobes 61 and 62 are extracted. The operated ropes 61 and 62 hang down, for example, between the trolley 80 and the lower port 80 and the sheave 71.
  • the sieve block of the grab bucket 100 is provided between the two.
  • the sheave blocks 15 la and 15 1 b can be lowered to the predetermined position of the container hanging device 150 even if there are the hooks 101 and 102 and the mounting table 201. Further, the grab bucket 100 and the hanging tool 150 can be hung at the center of the trolley 80, and the length of the trolley 80 (the length in the traveling direction of the trolley) can be reduced.
  • S 11 1 Operate the auxiliary winches 55, 56 and pull out the ropes 65, 66.
  • the extended ropes 65 and 65 hang down, for example, from the trolley 80 or between the trolley 80 and the sheave 74.
  • step S12 A little before extracting all the ropes 65, 66 wound on the auxiliary winches 55, 56, the ropes 65 in the machine room 90 are provided as described in step S9.
  • the rope grip 201 is fixed to, 66.
  • the rope grip 201 hits the wall of the machine room 90.
  • the ropes 65 and 66 are not extended. In this state, further rotate the auxiliary winches 55, 56, and remove the ropes 65, 66 from the auxiliary winches 55, 56. As a result, the lobes 65, 66 are temporarily fixed to the machine room 90.
  • the lower sieve block 102 since the upper and lower sieve blocks 101 and 102 are connected by the connecting plate 116 in step S4, the lower sieve block 102 is prevented from moving. . Further, the sheave block 101 may be fixed to the lower surface of the trolley 80 with metal fittings. By fixing the sieve block 101, damage to the lobe wound on the drum can be reduced.
  • the container can be unloaded.
  • steps S9, S12, S13, and S15 if the lobe grip 201 is connected to a chain block or a small winch in the machine room 90, the winches 51, 52, 55, The work of adjusting the lengths of the lobes 61, 62, 65, 66 when the ropes 61, 62, 65, 66 are connected to the auxiliary rope 56 can be easily performed.
  • S38 Operate the main winches 51 and 52 to lower the sheave blocks 15a and 15b and place them on the ground.
  • the sieve blocks 15a and 15b are placed on both sides of the main body 103 of the grab bucket. Further, the main winches 51 and 52 are operated, and the ropes 65 and 66 around which the main winches 51 and 52 are wound are extracted.
  • the extended lobes 6 5 and 6 6 extend downward from the trolley 80 and It sags between 80 and sheave 77.
  • the rope hanging on the sheave block 101 is, for example, from below the trolley 80 or between the trolley 80 and the sheave 71. Hangs down at. Therefore, two auxiliary winches 55, 56 can be operated by one electric motor. There is no need to separate the connection of the rope to the auxiliary winches 55, 56 for supporting and opening and closing.
  • the auxiliary winches 55, 56 are for winding the ropes of the suspending hanger and do not carry out the cargo, so they can be made in this way. Therefore, in the embodiment, two auxiliary winches 55, 56 are shown as being provided, but it is recognized that only one is provided.
  • step S42 Shortly before all the lobes 61, 62 wound on the auxiliary winches 55, 56 are unreeled, as described in step S9, the lobes 61, 62 in the machine room 90 are returned. 6 Fix the rope grip 20 1 to 2. In this state, further rotate the auxiliary winches 55, 56, and remove the ropes 61, 62 from the auxiliary winches 55, 56. As a result, the lobes 61 and 62 are temporarily fixed in the machine room 90.
  • the cargo can be unloaded by the grab packet 100.
  • steps S 39, S 42, S 43, and S 45 if the rope grip 201 is connected to a chain block or a small winch in the machine room 90, the winches 51, 52, easily adjust the length of lobes 61, 62, 65, 66 when connecting ropes 61, 62, 65, 66 to the auxiliary ropes 55, 56. Can be.
  • the lobes are connected to each other at the end of the girder 40, but the lobe may be connected to the end of the girder 40.
  • the present invention can be applied to a device fixed to a hanging tool or a grab bucket via a winch, a sheave at one end of a girder, and a trolley sieve sequentially. It is not necessary to secure the suspension to the other end of the girder via the trolley. It can also be used with a winch installed on a trolley.
  • the grab bucket may be a grab that grabs timber or the like.
  • a hanger for hanging a long object such as a pipe may be used.
  • Containers are also one of the long objects. In the case of a hanging object for long objects, two lobes can be used.
  • FIGS. 12 to 22 will be described.
  • the ropes of the hanging devices to be used are connected to the main winches 51 and 52, and the ropes of the unused lifting devices are connected to the auxiliary winches 55 and 56. For this reason, it is necessary to change the lobe when changing the hanging equipment used.
  • the embodiment shown in FIGS. 12 to 22 eliminates the need for this switching operation.
  • the two ropes 65 at one end for the container hanger are connected to the hoisting drum 25 3, and the two ropes 66 at the other end are connected to the hoisting drum 25 4. Since the container ropes 65 and 66 consist of two ropes each, the drums 25 3 and 25 54 consist of two ropes each. There are hoisting ropes 65 and 66 outside the supporting lobe 26 1 and the opening and closing rope 26 2.
  • the drums 25 3 and 25 4 are located on the extension of the outer sieve of each of the sheaves 75 a and 75 b.
  • the ropes 65 and 66 of the drums 25 3 and 25 4 are connected to the sheave of the trolley 80 via the outer sheave of the sheaves 75 a and 75 b and the inner sheave in order. Reach. Therefore, the drums 25 1 and 25 2 and the reduction gears 27 1 and 27 2 can be installed between the two drums 25 3 and 25 4.
  • the axis of the opening / closing drum 25 2 is parallel to the axis of the supporting drum 25 1. Both are lined up horizontally.
  • the opening / closing drum 25 2 is closer to the sea than the supporting drum 25 1.
  • the supporting drum 25 1 and the hoisting drum 25 3 are connected on the same axis via a speed reducer 27 1. Between the two drums 25 1 and 25 3 there is a speed reducer 27 1.
  • the opening / closing drum 25 2 and the hoisting drum 25 4 are connected on the same axis via a speed reducer 27 2.
  • 2 drums 2 5 2, 2 5 4 There is a reduction gear 2 7 2 between.
  • the two reduction gears 27 1 and 27 2 are connected to the shaft 28 1 by an electromagnetic clutch 28 1.
  • Shaft 28 1 and clutch 28 2 are between drum 25 1 and drum 25 2.
  • the reducers 271, 272 and the drums 251, 253, 2552, 254 are connected by electromagnetic clutches 2883, 284, 2885, 2886, respectively.
  • Reference numerals 273 and 284 denote electric motors, which are on the same axis as the shaft 281.
  • the axes of the motors 273 and 274 are parallel to the axes of the drums 253 and 254.
  • the electric motor 273 (274) and the drum 253 (254) are arranged in a horizontal direction.
  • the motors 273, 274 have brakes 273a, 274a.
  • the motors 273 and 274 can be operated independently.
  • Each of the drums 251, 252, 253, 254 has a brake (not shown).
  • the drums 251, 252, 253, 254 are at the same height.
  • the motors 273 and 274 are at the same height.
  • Reducers 271, 272 are at the same height.
  • the lobes 66 and 262 of the drums 25 2 and 254 pass under the motors 274 and clutches 283 on the sieves 71 and 75b, respectively.
  • the mounts for the motor 274 and the brake 274a are arranged so as not to obstruct the lobe 66.
  • FIG. 12 is a schematic diagram showing the arrangement of the mouthpieces as in Fig. 1.
  • the configuration of the sieves 75a and 75b and the arrangement of the ropes 65 and 66 are incorrect.
  • Figures 13 to 15 are correct.
  • Clutches 281, 283, 284, 285, and 286 operate independently.
  • the ⁇ mark on the clutches 281, 283, 284, 285, 286 indicates the connected (ON) state
  • the X mark indicates the disconnected (OFF) state.
  • Figure 16 shows the connection state of the clutch during loading and unloading using a grab bucket.
  • the clutch 281, which connects the two reducers 271, 272, is in the disengaged state.
  • the clutches 284 and 286 of the hoisting drums 25 3 and 25 4 are in the disengaged state.
  • the grab bucket supporting drum 251, the opening / closing drum 252 and the clutches 283, 285 of the drum 2 52 are in the connected state. According to this, only the grab bucket can be supported and can be opened and closed.
  • the opening and closing of the grab baget is performed as known.
  • Figure 17 shows the connection of the clutch when loading using the container hanger.
  • the clutches 283 and 285 of the grab bucket supporting drum 251, and the opening / closing drum 252 are in a separated state.
  • the clutch 281, which connects the two reduction gears 271, 272, is in the connected state.
  • the clutches 284, 286 of the hoisting drums 253, 254 are in the connected state. According to this, only the container hanger can be raised and lowered.
  • the sheave blocks 15 1 c and 15 1 d of the container hanging device have two sheaves 15 55 a and 15 55 a, respectively.
  • the raised sheave block enters the hole of the cylinder 85 whose lower end is widened. Then, insert the pin 86 into the cylinder 85 and the sieve block. According to this, since the sieve block is supported by the pins 86, the brake of the drum can be made small or unnecessary. Movement of the sieve block by running the trolley 80 is prevented by the pin 86. The pin 86 is attached and detached by a worker from a scaffold installed under the trolley 80.
  • the drum can be dedicated to container hanging equipment and grab packets, so that the replacement work of the rope is unnecessary, and only the replacement work of the hanging equipment is required. Can be done. Also, adjust the diameter of the drum to a size suitable for cargo handling specifications (load, hoisting speed). In addition to this, the capacity of the motors 273 and 274 can be the same in the two cargo operations. Therefore, efficiency can be improved. In general, the maximum hoisting speed and the maximum hoisting load when loading with a grab bucket are about half of the maximum hoisting speed and the maximum hoisting load, respectively, when loading the container. For this reason, in this embodiment, the diameters of the grab packet drums 25 1 and 25 2 are made larger than the diameters of the container drums 25 3 and 25 4 and the number of mouthpieces is changed. I have.
  • FIGS. 1 to 11 is a case where the maximum load and the maximum hoisting speed are substantially the same in the case of the grab bucket and the container.
  • two supporting ropes 26 1 and two opening and closing ropes 26 2 are used in order to make the cargo handling specification of the embodiment of FIGS. 1 to 12.
  • two supporting drums 25 1 and two opening / closing drums 25 2 are used in order to make the cargo handling specification of the embodiment of FIGS. 1 to 12.
  • the diameter of drums 25 1 and 25 2 is the same as that of drums 25 3 and 25 4.
  • the sea-side ends of the grab bucket ropes 26 1 and 26 2 are connected to the drums 21 0, 21, and 20 at the sea-side end of the girder 40.
  • the rollers are connected to the drums 230 and 230 of the machine room 90 sequentially via rollers 220 and 220 installed on the mast 49.
  • Drum 230 is a spare drum with replacement ropes. It can be said that the drums 251, 2522, 210, and 230 are substantially installed on the same member.
  • drums 210 and 210 are drums on which ropes 261, 262 are wound about four times. At least one end of the drum 210 in the axial direction of the drum has a conical shape 21 la expanded toward the end.
  • the lobe on the drum 230 side is located on the conical portion 2111a of the drum 210, and the lobe on the drum 251, 252 side is located on the small diameter side.
  • a lever 218 is attached to the end of the shaft 211c of the drum 210.
  • the other end of the lever 218 is fixed to the bracket 215 by a pin 216.
  • the shaft end of the drum 210 is hexagonal.
  • Lever 2 18 has a hexagonal hole.
  • the lever 218 is detachable from the shaft 221c.
  • the bolt 218c is used to prevent the lever 218 from coming off.
  • the shaft 2 1 1 c is fixed to a conical drum.
  • the bracket 2 15 rotatably supports the conical drum 2 10. Brackets 2 15 are fixed to gaders 40.
  • the lobes 26 1 and 26 2 are fixed by a rope drip 2 17 so that they do not move in the longitudinal direction on the drum 2 30 side than the drum 2 10 and are laid.
  • the lobe grip 217 has a rope sandwiched between seats 218 of a girder 40 from the radial direction.
  • one end of the drums 25 1 and 25 2 in the axial direction is an enlarged conical shape 25 la and 25 2 a.
  • the fixed position between the ends of the ropes 26 1 and 26 2 and the drums 25 1 and 25 2 is at the other end of the drum (called the fixed side). That is, if the fixed portion of the rope 26 1 is set at one end, the conical portions 25 la and 25 2 a are at the other end. No rope is wrapped around the cones 25 la and 25 2 a during loading. Lobes may be located at the conical sections 25 1a and 25 2a during rope replacement.
  • the axial length of each of the conical portions 25 1 a and 25 2 a is such that the rope can be wound about three times.
  • a known spiral lobe groove (not shown) is provided in the small diameter portion of each of the drums 25 1 and 25 2.
  • the rope groove and the conical part 25 1 a are connected smoothly.
  • the conical portions 211a, 252a, and 252a of the drums 210, 251, and 252 are for performing the same operation as a known capstan.
  • the t- drums 230, 230 which move the lobes entering the drum to the smaller diameter side and prevent the ropes from being overlapped are drums in which the ropes 261, 262 are overlapped and wound.
  • the holding amount of the ropes 261, 262 of the drums 230, 230 is such that the ropes can be changed several times. For example, it is a multiple of the required length from drums 251, 252 to drum 210.
  • the drums 230 and 230 do not have an electric motor but have a brake device.
  • S107 Release the fixing of the end of the rope 261 to the drum 251.
  • a weight (not shown) is connected to the end of the rope 261, which has been removed from the drum 251, via a rope or the like, and suspended from the drum 251. The weight hangs from the machine room. At this time, the number of lobes wound on the drum 25 1 is two to three.
  • the braking device 240 sandwiches the lobe 261 from above and below, and provides resistance to the movement of the rope.
  • the brake device 240 has a plurality of upper arc-shaped protrusions 243 located between a plurality of lower arc-shaped protrusions 242. Rope 26 1 passes between them.
  • the upper convex portion 242 is pressed downward by a bonnet'nut 246 provided on the plate 245 having the lower convex portion 242.
  • the protruding portion 242 is provided on the plate 247.
  • S 1 13 Release the braking of drum 230 and advance lobe 2 61.
  • the mouth 2 6 1 exits under its own weight.
  • the brake device stops the rotation of the drum 230.
  • the drum 230 is prevented from rotating by the brake device.
  • the end of the rope 26 1 is fixed to the drum 230.
  • S 1 2 1 The drum 2 51 is rotated at a low speed by the motor 2 7 3 and wound up on the drum 2 5 1. As a result, the lobe fed from the drum 25 1 to the sheave 71 is wound around the drum 25 1. At the same time, the rope 26 1 hanging the weight is fed out from the drum 25 1. As a result, the position of the rope 261, which is wound around the drum 251, gradually moves toward the conical portion 251a.
  • Step S113 is performed when the slack of the rope extended from drum 230 is eliminated. Perform this step before the slack of the rope from drum 230 is eliminated. Step S127 is appropriately executed in steps before step S125. Repeat as necessary. Alternatively, reduce the braking force of the braking device of the drum 230, and rotate the drum 230 by the attraction force of the drum 251.
  • S131 Cut off the old rope from the fixed part and remove it.
  • S133 Fix the drum 210 with the pin 216, install the rope grip 217, and set the brake device for the drum 230.
  • the lobe 261 which has been used up to now, is used as the messenger robe, and the lobe 261, which is provided for the drum 230, is moved in advance. It is something that can be done.
  • drums 210 and 251 have conical portions, the mouth can be moved continuously.
  • the rope can be cut only once and the work can be simplified.
  • the position of the tip of the new lobe before replacement is the position of the undamaged rope between the drum 210 and the trolley 80.
  • drums 210 and 230 are independent for each of the ropes 261, 262, they can be replaced independently according to the degree of damage to the supporting rope 261, and the opening / closing rope 262. Things.
  • the lobes 26 1 and 26 2 are wound multiple times around a non-rotating drum 210 and secured with a mouth grip 21 17 so that they cannot move.
  • the drum 230 does not exert great force. For this reason, the drum 230 can use a lap winding drum. Also, the size of the brake device for the drum 230 can be reduced.
  • the structure of the drum 230 and the structure of its receiving seat can be easily reduced in price.
  • a general replacement drum ie, a spare
  • the normal replacement drum can be used almost as it is.
  • the location of the drum 230 need not be in the machine room 90. For example, it can be installed on the legs 4 1 and 4 2. However, when replacing the rope 261, an operator is required in the machine room 90 to work on the drum 251, so it is desirable to install the drum 230 in the machine room 90. If drums 230 are installed on the legs 41 and 42, scaffolds for workers will be required.
  • the structure of the drum 230 will be described with reference to FIGS.
  • the drum 230 has a flange 232 at both ends and a shaft 233 outside thereof.
  • the shaft 233 is mounted on a U-shaped receiving seat 235 having an open upper surface.
  • the U-shaped opening is closed with stop 23.
  • the brake device of the Dora 230 is a disc brake 238, which sandwiches the flange 232.
  • a pin 239 is passed through the seat 237 supporting the receiving seat 235 and the flange 232. This is also one of the braking devices.
  • the disc brake 2 3 8 can adjust the braking force. When replacing the rope, adjust the braking force by operating the disc brake 238 to prevent the lobes 261, 262 from being pulled out excessively from the drum 230. Next, a case will be described in which the replacement rope is no longer provided from the drum 230. Temporarily fix the rope in the machine room 90 to the machine room 90. Temporary fixing part and Dora Break the rope between the 230 points. Remove bin 239 and release the brake on disc brake 238. Raise the drum 230 and remove it from the seat 235. Next, the new drum 230 on which the rope is wound is placed on the seat 235. The end of the lobe of the new drum 230 is welded to the end of the temporarily fixed rope. Put the disc brake 2 3 8 in the braking state. Release the temporary fixation. The following is the same as the above operation.
  • the drum 230 since the drum 230 is replaced, new ropes can be easily replenished. Since the drum 230 can be separated from the brake device, it can be manufactured at low cost. In addition, since the brake device is a disk brake 238, the drum 230 can be moved in the radial direction, so that the drum 230 can be easily attached and detached. Also, since the disk of the disk brake 238 is composed of the flange of the drum 230, it can be manufactured at low cost.
  • the rope can be wound around the drum 230 when the amount of protrusion of the lobe is excessive.
  • the motor should be equipped with a brake device. In this case, the disc brake 238 and the bin 239 can be eliminated.
  • the drum 210 should be conical at both axial ends. By rotating the drum 230 with this electric motor and then winding up the mouthpiece with the drum 251 by the electric motor 273, the synchronization of the two electric motors can be eliminated. If the grab packet 100 is lifted slightly with a truck crane or the like, the slack can be easily removed.
  • the flange 213 of the drum 210 and the bracket 215 may be connected by a pin.
  • Flange 2 1 3 pin hole A plurality is provided on the circumference.
  • Steps S205 and S207 are performed when the slack of the rope 26 1 is eliminated. Repeat as necessary.
  • S 2 13 Cut the rope 26 1 between the temporary fixing part and the drum 25 1.
  • S 2 15 Rotate drum 2 51, extend lobe 2 61 from drum 2 51, and drop it to the ground.
  • S221 Repeat the above until the new lobe reaches the specified position.
  • S2 23 When the new rope reaches the predetermined position, the lobe 25 1 in the machine room 90 between the drum 25 1 and the sheave 75 a is temporarily fixed. And the Steps S213, S215, and S217 are performed.
  • the conical portion 2 51 a can be eliminated.
  • the new rope may be wound around the drum 251, until the new rope reaches the predetermined position. According to this, it is not necessary to temporarily fix and cut the lobe 261 in the middle.
  • the portion of the drum 210 is fixed to the girder 40 via a sheave 74 as shown in FIG. 1, for example. Therefore, a drum 210 is provided at the end of the girder 40.
  • Drum 230 is installed in machine room 90. Install rollers 220 on mast 49.
  • the end of the conventional mouthpiece 26 1 is temporarily fixed to the girder 40 near the seaside end of the girder 40, that is, near the drum 210.
  • After the lobe drawn from drum 230 is wound around drum 210, it is temporarily fixed to girder 40. For example, secure with rope grips 2 17. Weld the ends of the two lobes that are temporarily fixed. After welding, the temporary fixing is removed and the replacement work is performed as described above.
  • the lobe to be wrapped around the drum 210 can be the conventional mouthpiece 261.
  • the lightweight drum 210 is provided at the end of the girder 40, reinforcement of the girder 40 is not required. For this reason, it can be easily modified.
  • the means for preventing rotation of the drum 210 may be a drum brake or a disc brake, and may be of an electric type. Then, the rope grip 2 17 is held down by the electric motor. In other words, it allows remote control. This Brake, etc. enable rotation and rope movement when energized. Or, mouth—Pug lip 21 is installed in machine room 90. According to this, it is not necessary to go to the end of the girder 40 during the replacement work of the rope, and the replacement work can be easily performed.
  • This configuration for replacing the lobe can be applied to ropes of other hanging devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

Cette invention permet de faciliter un changement devant être effectué entre deux accessoires de levage, tels qu'un grappin et un accessoire de levage de conteneur, de même que le changement d'un câble. Un grappin (100) suspendu à un chariot (80) est descendu au sol par l'actionnement d'un treuil, la connexion entre le grappin (100) et les blocs de poulies (101, 102) étant détachée de manière à ce que lesdits blocs (101, 102) puissent être déplacés vers le haut. Le bloc de poulie (151) d'un accessoire de levage (150) de conteneur, qui est suspendu en position verticale, est ensuite descendu de manière à être connecté audit accessoire de levage (150). Lorsque l'on souhaite utiliser le grappin (100), ces procédures sont inversées. Le bloc de poulies de l'accessoire de levage en attente est ensuite levé, n'entravant ainsi aucunement le chargement de fret. On procède ensuite au montage d'un tambour supplémentaire (230) autour duquel sont enroulées les premières extrémités de câbles, tandis que lors des opérations de changement de câbles (260, 261), des tambours de manutention de fret (251, 252) autour desquels sont enroulées les autres extrémités, respectivement, des câbles (260, 261), sont actionnés de manière à ce que lesdits câbles (260, 261) enroulés autour du tambour supplémentaire s'enroulent également sur les tambours de manutention de fret (251, 252).
PCT/JP1996/000092 1995-09-20 1996-01-22 Grue et procede de changement de cable WO1997011021A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24126595 1995-09-20
JP7/241265 1995-09-20

Publications (1)

Publication Number Publication Date
WO1997011021A1 true WO1997011021A1 (fr) 1997-03-27

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PCT/JP1996/000092 WO1997011021A1 (fr) 1995-09-20 1996-01-22 Grue et procede de changement de cable

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Country Link
WO (1) WO1997011021A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102381627A (zh) * 2011-10-25 2012-03-21 太原重工股份有限公司 一种起升机构
CN104261293A (zh) * 2014-09-18 2015-01-07 大连华锐重工集团股份有限公司 四卷筒抓斗卸船机卷筒单动换绳系统及换绳方法
CN106672804A (zh) * 2017-01-10 2017-05-17 西王金属科技有限公司 一种天车换绳辅助装置

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Publication number Priority date Publication date Assignee Title
JPS4816657B1 (fr) * 1966-07-25 1973-05-23
JPS5234778A (en) * 1975-09-12 1977-03-16 Komatsu Ltd Method of detecting weld lines
JPH02233499A (ja) * 1989-01-27 1990-09-17 Marantec Antrieb & Steuerungstechnik Gmbh & Co Prod Ohg ロープ受けドラムおよびその製造方法

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Publication number Priority date Publication date Assignee Title
JPS4816657B1 (fr) * 1966-07-25 1973-05-23
JPS5234778A (en) * 1975-09-12 1977-03-16 Komatsu Ltd Method of detecting weld lines
JPH02233499A (ja) * 1989-01-27 1990-09-17 Marantec Antrieb & Steuerungstechnik Gmbh & Co Prod Ohg ロープ受けドラムおよびその製造方法

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MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 102624/1991 (Laid-open No. 49781/1993) (HITACHI ZOSEN CORP.), 29 June 1993. *
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 150322/1977 (Laid-open No. 76095/1979) (MITSUBISHI HEAVY INDUSTRIES, LTD), 30 May 1979. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102381627A (zh) * 2011-10-25 2012-03-21 太原重工股份有限公司 一种起升机构
CN104261293A (zh) * 2014-09-18 2015-01-07 大连华锐重工集团股份有限公司 四卷筒抓斗卸船机卷筒单动换绳系统及换绳方法
CN106672804A (zh) * 2017-01-10 2017-05-17 西王金属科技有限公司 一种天车换绳辅助装置

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